﻿//////////////////////////////////////////////////////////////////////////////
//
// Copyright © 1998-2024 Glodon Company Limited.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the “Software”),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//////////////////////////////////////////////////////////////////////////////
#include "CmdUndo.h"
#include "CommandIds.h"
#include "CommandRegister.h"
#include "IDocument.h"
#include "IUiDocument.h"
#include "UiDocumentViewUtils.h"
#include "UndoRedoUtils.h"
#include "IHighlights.h"
#include "ISelection.h"
#include "EnableCompileWarning_The_LAST_IncludeInCpp.h" 

using namespace gcmp;
using namespace Sample;

REGISTER_COMMAND(CmdUndo)

CmdUndo::CmdUndo()
    :CommandBase(ID_CMD_UNDO)
{
}

bool CmdUndo::IsEnabled() const
{
    IDocument *pDocument = UiDocumentViewUtils::GetCurrentDocument();
    if (pDocument)
    {
        return UndoRedoUtils::CanUndo(pDocument);
    }
    return false;
}

bool CmdUndo::IsVisible() const
{
    return UiDocumentViewUtils::GetCurrentDocument() != nullptr;
}

gcmp::OwnerPtr<gcmp::IAction> CmdUndo::ExecuteCommand(const gcmp::CommandParameters& cmdParams)
{
    IDocument *pDocument = UiDocumentViewUtils::GetCurrentDocument();
    IHighlights* pHighlights = IHighlights::Get();
    pHighlights->Clear();
    ISelection* pSelection = ISelection::Get();
    pSelection->Clear(pDocument);
    if (UndoRedoUtils::CanUndo(pDocument))
    {
        UndoRedoUtils::Undo(pDocument);
        IUiDocument * pUIDoc = UiDocumentViewUtils::GetCurrentUiDocument();
        pUIDoc->UpdateView();
    }
    return nullptr;
}
